Loose-leaf binder



P. 0. UNGER.

LOOSE LEAF BINDER. APPLICATION. FILED DEC. I6, 1918- 1,3,'71,583. a ntedMar. 15, 1921.

Z SHEETS-SHEET I.

P. 0. UNGER.

LOOSE lEAF BINDER.

APPLICATION FILED mac. 16. 191B.

1 ,i371,583 Patented Mar. 15,1921.

r 2 SHEETS-SHEET 2. Z 2 v V UNITED STATES PATENT OFFICE.

PAUL 0. UN GER, CHICAGO, ILLINOIS, ASSIGNOB TO WILSON-J ON ES LOOSE LEAFCOMPANY, A CORPORATION OF ILLINOIS.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed December 16, 1918. I Serial No. 266,948.

To all whom it may concern:

Be it known that I, PAUL O. UNGER, a

citizen of the United States, and a resident of the city of Chicago, inthe county of Cook and State of Illinois, have invented certain theaccompanying drawings, and to the numerals of reference marked thereon,which form a part of this specification.

This invention relates to an improved form of a loose leaf binderwherein apertured clamping members are adj ustably con.- nected byflexible impaling posts, and has mounted in the ends thereof insets for1'0- tatably supporting rollers which project outwardly through theapertures of said clamping members to facilitate movement of the binderwhen in open position.

It is an object of the invention to construct a binder wherein aperturedclamping members are provided with projecting rollers to permit easymovement of the binder when in open position. 7

Other and further important objects of this invention will be apparentfrom the disclosures in the specification and draw- -m s.

The invention (in a preferred form) is illustrated in the drawings andhereinafter more fully described.

On the drawings:

Figure l is a bottom plan View of a binder embodying the principles ofthis invention.

Fig. 2 is a rear end view thereof.

Fig. 3 is a side view of the binder partly broken away and turned onend.

Fig. 4 is an enlarged detail section taken on line 4-4, of Fig. 1,showing parts in elevation. V

Fig. 5 is 'an enlarged fragmentary top plan view of the lower clampingmember.

Fig. 6 is an enlarged section taken on line F 6-6, of Fig. 4.

Fig. 7 is an enlarged detail section on line7-7, of Fig. 6. i I

Fig. 8 is a section taken on line 88, of Fig.

Fig. 9 is a section taken on line 99, of Fig.

Fig. 10 is a section taken on line 1010, of Fig. 6.

"Fig. 11 is an enlarged section taken on line 11-11, of Fig. 4.

F 12 is an enlarged fragmentary detail section taken on line l212, ofFig. 6, with parts omitted.

Fig. 13 is an elevational view of a portion of one of the chain bindingposts removed from the binder.

Fig. 14 is an enlarged detail section on line 14-14, of Fig. 13.

Fig. 15 is a central vertical section taken through the outer end of oneof the flexible posts, and showing parts in elevation.

Fig. 16 i s an enlarged side elevation of one of the chain post links.

As shown on the drawings:

In the construction shown the reference numerals 1 and 2, represent thelower and upper covers of a loose leaf chain binder, having attached tothe rear edges thereof by means of hinges 3, lower and upper hollowclamping members or casings 4 and 5, respectively, which form a part ofsaid covers.

The hollow clamping member 4, is made of two pieces of metal shaped asshown in Fig. 11, and closed-at the ends by end plates which aresoldered or brazed thereto. The top wall of the clamping member 4, isprovided near the ends thereof with post openings. Secured within eachend of the clamping member 4, is an insert 6, which may be constructedin any suitable manner, that shown, however, consisting of a platestamped in a U-shape to fit in the end of the clamping member. Apassaged. block or bushing 7, is securely mounted to the inside of eachinsert within the lower clamping member and is provided with a reducedneck 8, adapted to engage tightly in one ofthe post openings providedfor the purpose in the top wall of the clamping member 4, to hold theblock in place. As clearly shown in Fig. 4, the lower or bottom wall ofthe clamping member 4, has an opening near each end thereof directlybelow concave recesses formed in the respective blocks 7, and themargins of said openings are curled or bent inwardly to engage in therecesses in the blocks 7, and form collars or rings 9, affording pocketsor recesseslO, for a purpose hereinafter described. The rear curved wallof the clamping member 4, is provided with an opening at each endthereof through each of which a roller 11, projects. The rollers 11, arerotatably mounted on short axles or pins 12,.the outer ends of which areslotted to receive a screw driver to permit the reduced inner threadedends of said 'pins to be threaded into threaded apertures pro vided forthe purpose in the inner flanges of the channel inserts 6.

The hollow upper clamping member 5, is made of two pieces of metalshaped as shown in Fig. 9, and closed at the ends by end plates whichare soldered or brazed thereto. The bottom or inner wall of the clampingmember 5, is provided near each end thereof with av post opening 13.Secured rigidly in the ends of the clamping member 5, are two upwardlydirected channel braces or U-shaped inserts 14 and 15, respectively. Therear alined with one another.

curved wall of the upper clamping member 5, is provided with an opening16, at each end thereof through each of which a roller 17, projects. Therollers 17, are rotatably mounted on short axles or pins 18, the outerends of which are slotted to receive the end of a screw driver to permitthe threaded re duced inner ends of said pins to be threaded intothreaded apertures provided for the purpose in the inner flanges of thechannel inserts 14 and 15. The two flanges oft-he channel insert 14, areeach provided with an opening 19, near the lnner edges thereof throughwhich the'stem end 20, of a rotatable shaft projects. The outer end ofthe shaft stem 20, is squared as denoted by the reference numeral 21,and is positioned to allow a suitable key to be inserted through anaperture or opening 22, in the end wall of the clamping member adjacentthe bracket 14. The openings 19 and 22, are The actuating shaft -isdisposed longitudinally in the clamping member 5, near the inner orhinged wall thereof, and is threaded'to-afiord a right thread portion23, and a left thread portion 24.

Slidably disposed within the upper clamping member 5, are two bearingblocks 25, provided with transverse threaded passages near the innerends thereof through which the right and left threaded shaftportions 23and 24, respectively are threaded. The bearing blocks 25, support theshaft in position to -permit the same toproject through an opening 26,provided for .the purpose in the upright walls 27, of two stamped chainpost guide members which are rigidly secured within the clamping member5, to the inside of the inserts l4 and 15. Each of the chain guidemembers embraces besides the upright wall 27, a downwardly curved guidetongue 28, the lower end of which is bent to afford a flange or lug 29,which is spot welded or otherwise secured to a centrally apertured plate30, integrally formed at an angle to the lower edge'of the upright wall27. The middle portion of the plate 30, behind the aperture is depressedas denoted by the reference numeral 31, to afford an elbow guide passagethe upper end of which opens into an opening 26, formed centrally in theupright wall 27 Connecting the upper clamping member 5, with the lowerclamping member 4, are

two link impaling posts or chain binding posts each constructed exactlyalike and em-Q threaded upwardly through threaded passages 36, formed insaid blocks at right angles and crossing through the central transversepassages in said blocks. The anchor bolt passages 34, register with thethreaded passages 36, to permit the screws 35, to project therethroughto hold the chain posts anchored to the bearing blocks. A plurality ofpivOtally connected interfitting links form a part of each chain bindingpost,

and as clearly shown in Fig. 16, each ofsaid chain links is constructedto. comprise an inclined bifurcated head 37, provided with a diametricalslot 38. A rib or tail piece 39, is integrally formed centrally 'on thebottom of each link head 37 in a plane with the slot 38.. A transversepassage or opening 40, is formed in the upper rear portion or corner ofeach of the link heads 37,

at right angles to the slot 38. Formed trans versely through the: lowerrear cornerv of each of the link tails 39, is an opening or passage 41.The chain links are pivotally connected one to the other by means oflink pins 42, as clearly shown in Figs. '13 and 14, to permit'the chainposts which have a diagonal break to bend or fie in one direction only.When the links are connected as shown the tail 39 of one link engagesthe slot 38 of an adjacent link so that therespective passages 41 and 40of said links are in register to receive one of the link pins 42. Theinner end link of each post is 'pivotally connected to the head 32, ofthe anchor link, while the other end link of each chain'post ispivotally connected to an apertured tail piece integrallyformed on oneend of a longer cylindrical end link 44, provided with an axialthreadedpassage 45, in the other end thereof. Removably threaded into thethreadedpassage 45, of each of the end links 44, is a reduced threadedstem 46,of an extension link 47 which may be of any desired length, andis provided with an axial threaded passage 48, in the outer endthereofto removably receive the threaded stem 49, of an enlarged knurledhead or top piece 50.

Removably disposed between the binder covers 1 and 2, are a plurality ofloose leaves 51, the binding margin of each of which is provided with aplurality of slots to permit the chain posts to project therethrough forthe purpose of removably clamping said loose leaves in position betweenthe clamping members 4 and 5, as shown in Figs. 2 and 4.

The operation is as' follows:

The loose leaves 51, are slotted at their binding margins to permit thesame to be engaged on the chain binding or impaling posts. Whensuflicient leaves are disposed between the binder covers 1 and 2, abinder key is projected into the opening 22, to engage on the squaredtip or end 21, of the actuating shaft 23-24. By turning the key theshaft is rotated thereby causing the bearing blocks 25, engaged thereonto move inwardly toward each other within the clamping member 5, to pullthe chain posts up- Wardly and then inwardly toward each other intolooking or clamping position as shown in Fig. 4, wherein the knurledpost heads 50, seat in the recesses 10, afforded by the collars 9, ofthe lower clamping member 4. The turning of the shaft acts to draw thechain binding posts inwardly whereby the upper clamping member 5, andthe lower 0 amping member 4, are tightly drawn toward one anothersecurely clamping the binding margins of the loose leaves 51,therebetween.

The peculiar and novel construction of the chain post links permits thechain posts to break diagonally and bend along the pivoted sides thereofonly. When the number of loose leaves between the binder covers bechainpost elbow guides 2831, guide the chain posts at the bend or elbow andfacilitate the operation thereof.

When the locked binder is positioned as shown in Fig. 3, or in openposition with the rollers 11 and 17, resting on a table or desk, thebinder may be very easily moved about on said table or desk, saidrollers revolving on the roller pins 12 and 18, thus obviatingscratching or marring of the table or desk.

Referring to Figs. 8 to 11, inclusive, it will be noted that theclamping members 4 and 5, are each made of two metal members. which aresoldered or welded together after the necessary operating parts havebeen assembled therein. The open ends of the casings formed by the metalmembers are closed by means of end plates which are soldered or weldedto the end walls of the inserts 6, 14 and 15 preferably before thelatter are secured in the ends of the casings 4 and 5.

I am aware that numerous details of construction may be varied through awide range without departing from the principles of this invention, andI therefore do not purpose limiting the patent granted otherwise thannecessitated by the prior art.

I claim as my invention:

1. The combination with a binder embracing clamping members, of coverspivotally connected thereto, and rollers mounted in said clampingmembers adapted to permit easy movement of said binder when open.

2. The combination with a chain post binder comprising apertured clampinmembers of covers hinged thereto, enc

inserts secured in said clamping members, and rollers in said clampingmembers supported by said end inserts and projecting through theapertures in said clamping members to facilitate movement of the binder.

' In testimony whereof I have hereunto subscribed my name in thepresence of a subscribing witness.

PAUL O. UNGER.

Witness EARL M. HARDINE.

